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mdio_mux_iproc.c
(10.87 KB)
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mdio_nexus_iproc.c
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mdio_ns2_pcie_phy.c
(4.38 KB)
Editing: mdio_nexus_iproc.c
/*- * Copyright (c) 2019 Juniper Networks, Inc. * Copyright (c) 2019 Semihalf. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); #include <sys/param.h> #include <sys/bus.h> #include <sys/kernel.h> #include <sys/module.h> #include <sys/rman.h> #include <sys/systm.h> #include <dev/fdt/simplebus.h> #include <dev/ofw/ofw_bus_subr.h> #include <dev/ofw/ofw_bus.h> #include <machine/bus.h> #include <machine/resource.h> #include "mdio_if.h" MALLOC_DEFINE(M_BRCM_IPROC_NEXUS, "Broadcom IPROC MDIO NEXUS", "Broadcom IPROC MDIO NEXUS dynamic memory"); struct brcm_mdionexus_softc { struct simplebus_softc simplebus_sc; uint32_t mux_id; }; /* OFW bus interface */ struct brcm_mdionexus_ofw_devinfo { struct ofw_bus_devinfo di_dinfo; struct resource_list di_rl; }; static device_probe_t brcm_mdionexus_fdt_probe; static device_attach_t brcm_mdionexus_fdt_attach; static const struct ofw_bus_devinfo * brcm_mdionexus_ofw_get_devinfo(device_t, device_t); static int brcm_mdionexus_mdio_readreg(device_t, int, int); static int brcm_mdionexus_mdio_writereg(device_t, int, int, int); static device_method_t brcm_mdionexus_fdt_methods[] = { /* Device interface */ DEVMETHOD(device_probe, brcm_mdionexus_fdt_probe), DEVMETHOD(device_attach, brcm_mdionexus_fdt_attach), /* Bus interface */ DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource), DEVMETHOD(bus_release_resource, bus_generic_release_resource), DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), /* ofw_bus interface */ DEVMETHOD(ofw_bus_get_devinfo, brcm_mdionexus_ofw_get_devinfo), DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat), DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model), DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name), DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node), DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type), /* MDIO interface */ /* MDIO interface */ DEVMETHOD(mdio_readreg, brcm_mdionexus_mdio_readreg), DEVMETHOD(mdio_writereg, brcm_mdionexus_mdio_writereg), DEVMETHOD_END }; DEFINE_CLASS_0(brcm_mdionexus, brcm_mdionexus_fdt_driver, brcm_mdionexus_fdt_methods, sizeof(struct brcm_mdionexus_softc)); static devclass_t brcm_mdionexus_fdt_devclass; static driver_t brcm_mdionexus_driver = { "brcm_mdionexus", brcm_mdionexus_fdt_methods, sizeof(struct brcm_mdionexus_softc) }; EARLY_DRIVER_MODULE(brcm_mdionexus, brcm_iproc_mdio, brcm_mdionexus_driver, brcm_mdionexus_fdt_devclass, NULL, NULL, BUS_PASS_BUS + BUS_PASS_ORDER_MIDDLE); static int brcm_mdionexus_ofw_bus_attach(device_t); static int brcm_mdionexus_mdio_readreg(device_t dev, int phy, int reg) { struct brcm_mdionexus_softc *sc; sc = device_get_softc(dev); return (MDIO_READREG_MUX(device_get_parent(dev), sc->mux_id, phy, reg)); } static int brcm_mdionexus_mdio_writereg(device_t dev, int phy, int reg, int val) { struct brcm_mdionexus_softc *sc; sc = device_get_softc(dev); return (MDIO_WRITEREG_MUX(device_get_parent(dev), sc->mux_id, phy, reg, val)); } static __inline void get_addr_size_cells(phandle_t node, pcell_t *addr_cells, pcell_t *size_cells) { *addr_cells = 2; /* Find address cells if present */ OF_getencprop(node, "#address-cells", addr_cells, sizeof(*addr_cells)); *size_cells = 2; /* Find size cells if present */ OF_getencprop(node, "#size-cells", size_cells, sizeof(*size_cells)); } static int brcm_mdionexus_fdt_probe(device_t dev) { if (!ofw_bus_status_okay(dev)) return (ENXIO); device_set_desc(dev, "Broadcom MDIO nexus"); return (BUS_PROBE_SPECIFIC); } static int brcm_mdionexus_fdt_attach(device_t dev) { struct brcm_mdionexus_softc *sc; int err; pcell_t addr_cells, size_cells, buf[2]; phandle_t node; sc = device_get_softc(dev); node = ofw_bus_get_node(dev); get_addr_size_cells(node, &addr_cells, &size_cells); if ((addr_cells != 1) || (size_cells != 0)) { device_printf(dev, "Only addr_cells=1 and size_cells=0 are supported\n"); return (EINVAL); } if (OF_getencprop(node, "reg", buf, sizeof(pcell_t)) < 0) return (ENXIO); sc->mux_id = buf[0]; err = brcm_mdionexus_ofw_bus_attach(dev); if (err != 0) return (err); return (bus_generic_attach(dev)); } static const struct ofw_bus_devinfo * brcm_mdionexus_ofw_get_devinfo(device_t bus __unused, device_t child) { struct brcm_mdionexus_ofw_devinfo *di; di = device_get_ivars(child); return (&di->di_dinfo); } static int brcm_mdionexus_ofw_bus_attach(device_t dev) { struct simplebus_softc *sc; struct brcm_mdionexus_ofw_devinfo *di; device_t child; phandle_t parent, node; parent = ofw_bus_get_node(dev); simplebus_init(dev, parent); sc = (struct simplebus_softc *)device_get_softc(dev); /* Iterate through all bus subordinates */ for (node = OF_child(parent); node > 0; node = OF_peer(node)) { /* Allocate and populate devinfo. */ di = malloc(sizeof(*di), M_BRCM_IPROC_NEXUS, M_WAITOK | M_ZERO); if (ofw_bus_gen_setup_devinfo(&di->di_dinfo, node) != 0) { free(di, M_BRCM_IPROC_NEXUS); continue; } /* Initialize and populate resource list. */ resource_list_init(&di->di_rl); ofw_bus_reg_to_rl(dev, node, sc->acells, sc->scells, &di->di_rl); ofw_bus_intr_to_rl(dev, node, &di->di_rl, NULL); /* Add newbus device for this FDT node */ child = device_add_child(dev, NULL, -1); if (child == NULL) { resource_list_free(&di->di_rl); ofw_bus_gen_destroy_devinfo(&di->di_dinfo); free(di, M_BRCM_IPROC_NEXUS); continue; } device_set_ivars(child, di); } return (0); }
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